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{
    "id": 21127,
    "url": "https://patchwork.libcamera.org/api/1.1/patches/21127/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/21127/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
        "list_email": "libcamera-devel@lists.libcamera.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<20240830210313.30691-4-chenghaoyang@chromium.org>",
    "date": "2024-08-30T21:00:21",
    "name": "[v3,3/3] libcamera: android: Add face detection control support",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "8f3eb4125243eb7c521e81626c52c2a54bfef5e4",
    "submitter": {
        "id": 117,
        "url": "https://patchwork.libcamera.org/api/1.1/people/117/?format=api",
        "name": "Cheng-Hao Yang",
        "email": "chenghaoyang@chromium.org"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/21127/mbox/",
    "series": [
        {
            "id": 4553,
            "url": "https://patchwork.libcamera.org/api/1.1/series/4553/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4553",
            "date": "2024-08-30T21:00:18",
            "name": "Add Face Detection Controls",
            "version": 3,
            "mbox": "https://patchwork.libcamera.org/series/4553/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/21127/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/21127/checks/",
    "tags": {},
    "headers": {
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        "From": "Harvey Yang <chenghaoyang@chromium.org>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Cc": "Harvey Yang <chenghaoyang@chromium.org>,\n\tYudhistira Erlandinata <yerlandinata@chromium.org>",
        "Subject": "[PATCH v3 3/3] libcamera: android: Add face detection control\n\tsupport",
        "Date": "Fri, 30 Aug 2024 21:00:21 +0000",
        "Message-ID": "<20240830210313.30691-4-chenghaoyang@chromium.org>",
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        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Allow Android HAL adapter to pass the face detection metadata control to\nthe pipeline and also send face detection metadata to the camera client\nif the pipeline generates it.\n\nSigned-off-by: Yudhistira Erlandinata <yerlandinata@chromium.org>\nCo-developed-by: Harvey Yang <chenghaoyang@chromium.org>\n---\n src/android/camera_capabilities.cpp | 45 +++++++++++++++++++--\n src/android/camera_device.cpp       | 61 ++++++++++++++++++++++++++++-\n 2 files changed, 100 insertions(+), 6 deletions(-)",
    "diff": "diff --git a/src/android/camera_capabilities.cpp b/src/android/camera_capabilities.cpp\nindex 71043e127..a89a3115d 100644\n--- a/src/android/camera_capabilities.cpp\n+++ b/src/android/camera_capabilities.cpp\n@@ -7,6 +7,8 @@\n \n #include \"camera_capabilities.h\"\n \n+#include <stdint.h>\n+\n #include <algorithm>\n #include <array>\n #include <cmath>\n@@ -1176,11 +1178,46 @@ int CameraCapabilities::initializeStaticMetadata()\n \t\t\t\t  maxFrameDuration_);\n \n \t/* Statistics static metadata. */\n-\tuint8_t faceDetectMode = ANDROID_STATISTICS_FACE_DETECT_MODE_OFF;\n-\tstaticMetadata_->addEntry(ANDROID_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES,\n-\t\t\t\t  faceDetectMode);\n-\n \tint32_t maxFaceCount = 0;\n+\tauto iter = camera_->controls().find(controls::draft::FaceDetectMode.id());\n+\tif (iter != camera_->controls().end()) {\n+\t\tconst ControlInfo &faceDetectCtrlInfo = iter->second;\n+\t\tstd::vector<uint8_t> faceDetectModes;\n+\t\tbool hasFaceDetection = false;\n+\n+\t\tfor (const auto &value : faceDetectCtrlInfo.values()) {\n+\t\t\tuint8_t mode = value.get<uint8_t>();\n+\t\t\tuint8_t androidMode = 0;\n+\n+\t\t\tswitch (mode) {\n+\t\t\tcase controls::draft::FaceDetectModeOff:\n+\t\t\t\tandroidMode = ANDROID_STATISTICS_FACE_DETECT_MODE_OFF;\n+\t\t\t\tbreak;\n+\t\t\tcase controls::draft::FaceDetectModeSimple:\n+\t\t\t\tandroidMode = ANDROID_STATISTICS_FACE_DETECT_MODE_SIMPLE;\n+\t\t\t\thasFaceDetection = true;\n+\t\t\t\tbreak;\n+\t\t\tdefault:\n+\t\t\t\tLOG(HAL, Fatal) << \"Received invalid face detect mode: \" << mode;\n+\t\t\t}\n+\t\t\tfaceDetectModes.push_back(androidMode);\n+\t\t}\n+\t\tif (hasFaceDetection) {\n+\t\t\t/*\n+\t\t\t * \\todo Create new libcamera controls to query max\n+\t\t\t * possible faces detected.\n+\t\t\t */\n+\t\t\tmaxFaceCount = 10;\n+\t\t\tstaticMetadata_->addEntry(\n+\t\t\t\tANDROID_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES,\n+\t\t\t\tfaceDetectModes.data(), faceDetectModes.size());\n+\t\t}\n+\t} else {\n+\t\tuint8_t faceDetectMode = ANDROID_STATISTICS_FACE_DETECT_MODE_OFF;\n+\t\tstaticMetadata_->addEntry(ANDROID_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES,\n+\t\t\t\t\t  faceDetectMode);\n+\t}\n+\n \tstaticMetadata_->addEntry(ANDROID_STATISTICS_INFO_MAX_FACE_COUNT,\n \t\t\t\t  maxFaceCount);\n \ndiff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp\nindex 493f66e7b..87b087160 100644\n--- a/src/android/camera_device.cpp\n+++ b/src/android/camera_device.cpp\n@@ -15,6 +15,7 @@\n #include <vector>\n \n #include <libcamera/base/log.h>\n+#include <libcamera/base/span.h>\n #include <libcamera/base/unique_fd.h>\n #include <libcamera/base/utils.h>\n \n@@ -22,6 +23,7 @@\n #include <libcamera/controls.h>\n #include <libcamera/fence.h>\n #include <libcamera/formats.h>\n+#include <libcamera/geometry.h>\n #include <libcamera/property_ids.h>\n \n #include \"system/graphics.h\"\n@@ -813,6 +815,11 @@ int CameraDevice::processControls(Camera3RequestDescriptor *descriptor)\n \t\tcontrols.set(controls::ScalerCrop, cropRegion);\n \t}\n \n+\tif (settings.getEntry(ANDROID_STATISTICS_FACE_DETECT_MODE, &entry)) {\n+\t\tconst uint8_t *data = entry.data.u8;\n+\t\tcontrols.set(controls::draft::FaceDetectMode, data[0]);\n+\t}\n+\n \tif (settings.getEntry(ANDROID_SENSOR_TEST_PATTERN_MODE, &entry)) {\n \t\tconst int32_t data = *entry.data.i32;\n \t\tint32_t testPatternMode = controls::draft::TestPatternModeOff;\n@@ -1540,8 +1547,9 @@ CameraDevice::getResultMetadata(const Camera3RequestDescriptor &descriptor) cons\n \tvalue32 = ANDROID_SENSOR_TEST_PATTERN_MODE_OFF;\n \tresultMetadata->addEntry(ANDROID_SENSOR_TEST_PATTERN_MODE, value32);\n \n-\tvalue = ANDROID_STATISTICS_FACE_DETECT_MODE_OFF;\n-\tresultMetadata->addEntry(ANDROID_STATISTICS_FACE_DETECT_MODE, value);\n+\tsettings.getEntry(ANDROID_STATISTICS_FACE_DETECT_MODE, &entry);\n+\tresultMetadata->addEntry(ANDROID_STATISTICS_FACE_DETECT_MODE,\n+\t\t\t\t entry.data.u8, 1);\n \n \tvalue = ANDROID_STATISTICS_LENS_SHADING_MAP_MODE_OFF;\n \tresultMetadata->addEntry(ANDROID_STATISTICS_LENS_SHADING_MAP_MODE,\n@@ -1580,6 +1588,55 @@ CameraDevice::getResultMetadata(const Camera3RequestDescriptor &descriptor) cons\n \t\tresultMetadata->addEntry(ANDROID_SENSOR_FRAME_DURATION,\n \t\t\t\t\t *frameDuration * 1000);\n \n+\tconst auto &faceDetectRectangles =\n+\t\tmetadata.get(controls::draft::FaceDetectFaceRectangles);\n+\tif (faceDetectRectangles) {\n+\t\tconst Span<const Rectangle> rectangles = *faceDetectRectangles;\n+\t\tstd::vector<int32_t> flatRectangles;\n+\t\tfor (const Rectangle &rect : rectangles) {\n+\t\t\tflatRectangles.push_back(rect.x);\n+\t\t\tflatRectangles.push_back(rect.y);\n+\t\t\tflatRectangles.push_back(rect.x + rect.width);\n+\t\t\tflatRectangles.push_back(rect.y + rect.height);\n+\t\t}\n+\t\tresultMetadata->addEntry(\n+\t\t\tANDROID_STATISTICS_FACE_RECTANGLES, flatRectangles);\n+\t}\n+\n+\tconst auto &faceDetectFaceScores =\n+\t\tmetadata.get(controls::draft::FaceDetectFaceScores);\n+\tif (faceDetectRectangles && faceDetectFaceScores) {\n+\t\tconst Span<const uint8_t> &scores = *faceDetectFaceScores;\n+\t\tif (scores.size() != faceDetectRectangles->size()) {\n+\t\t\tLOG(HAL, Error) << \"Pipeline returned wrong number of face scores; \"\n+\t\t\t\t\t<< \"Expected: \"\n+\t\t\t\t\t<< faceDetectRectangles->size()\n+\t\t\t\t\t<< \", got:\" << scores.size();\n+\t\t}\n+\t\tresultMetadata->addEntry(ANDROID_STATISTICS_FACE_SCORES, scores);\n+\t}\n+\n+\tconst auto &faceDetectFaceLandmarks =\n+\t\tmetadata.get(controls::draft::FaceDetectFaceLandmark);\n+\tif (faceDetectFaceScores && faceDetectRectangles &&\n+\t    faceDetectFaceLandmarks) {\n+\t\tconst auto &landmarks = *faceDetectFaceLandmarks;\n+\t\tsize_t expectedLandmarks = faceDetectRectangles->size() * 3;\n+\t\tif (landmarks.size() != expectedLandmarks) {\n+\t\t\tLOG(HAL, Error) << \"Pipeline returned wrong number of face landmarks; \"\n+\t\t\t\t\t<< \"Expected: \" << expectedLandmarks\n+\t\t\t\t\t<< \", got: \" << landmarks.size();\n+\t\t}\n+\n+\t\tstd::vector<int32_t> androidLandmarks;\n+\t\tfor (const auto &landmark : landmarks) {\n+\t\t\tandroidLandmarks.push_back(landmark.x);\n+\t\t\tandroidLandmarks.push_back(landmark.y);\n+\t\t}\n+\t\tresultMetadata->addEntry(\n+\t\t\tANDROID_STATISTICS_FACE_LANDMARKS, androidLandmarks);\n+\t}\n+\n \tconst auto &scalerCrop = metadata.get(controls::ScalerCrop);\n \tif (scalerCrop) {\n \t\tconst Rectangle &crop = *scalerCrop;\n",
    "prefixes": [
        "v3",
        "3/3"
    ]
}